Title :
High-resolution multichannel Time-to-Digital Converter core implemented in FPGA for ToF measurements in SiPM-PET
Author :
Torres, Juana ; Aguilar, Albert ; Garcia-Olcina, R. ; Martos, J. ; Soret, J. ; Gonzalez, A.J. ; Conde, P. ; Hernandez, L. ; Sanchez, F. ; Benlloch, J.M.
Author_Institution :
Commun. & Digital Syst. Design group (DSDC), Univ. de Valencia, Valencia, Spain
fDate :
Oct. 27 2013-Nov. 2 2013
Abstract :
In this contribution, Coincidence Resolving Time (CRT) results with the developed multichannel FPGA-TDC are showed as a function of different configurations for both, the sensor bias voltage and the digitizer threshold. The dependence of the CRT with the sensor matrix temperature, the amount of SiPM active area and the crystal type are also analyzed. Preliminary measurements carried out with a crystal array of 2 mm pixel size and 10 mm height have shown time resolutions for the entire 144 SiPM two-detectors ensemble as good as 800 ps.
Keywords :
analogue-digital conversion; biomedical equipment; convertors; field programmable gate arrays; medical signal processing; photodetectors; photomultipliers; positron emission tomography; silicon; Si; SiPM active area; SiPM-PET; ToF measurements; coincidence resolving time; crystal array of; crystal type; digitizer threshold; high-resolution multichannel time-to-digital converter core; multichannel FPGA-TDC; preliminary measurements; sensor bias voltage; sensor matrix temperature; size 10 mm; size 2 mm; Detectors; Matrix converters; Positron emission tomography; Semiconductor device measurement; Surges; Temperature measurement; Temperature sensors;
Conference_Titel :
Nuclear Science Symposium and Medical Imaging Conference (NSS/MIC), 2013 IEEE
Conference_Location :
Seoul
Print_ISBN :
978-1-4799-0533-1
DOI :
10.1109/NSSMIC.2013.6829200
